When an Owner is selected, the Customer filter options will update to show the corresponding customers, and vice versa

tests/dependentFilters.test.cjs

@@ -0,0 +1,43 @@
+const { test } = require('node:test');
+const assert = require('node:assert/strict');
+const { loadApplication } = require('./support/application.cjs');
+function setup() {
+  const app = loadApplication('content');
+  const items = [['A', 'X'], ['A', 'Y'], ['B', 'Y'], ['C', 'Z'], ['A', 'X']].map(([customer, owner]) => ({
+    CustomerAccount: { PartyId: customer, PartyUniqueName: customer }, Owner: owner
+  }));
+  app.opportunitiesTableState.opportunitiesTableState.items = items;
+  app.opportunitiesFilters.resetCustomerFilter(items);
+  app.opportunitiesFilters.resetOwnerFilter(items);
+  return { filters: app.opportunitiesFilters, state: app.opportunitiesFilterState };
+}
+const labels = options => Array.from(options, option => option.label);
+test('customers narrow owners without losing all-owner selection; widening restores options', () => {
+  const { filters, state } = setup();
+  state.selectedCustomerKeys = new Set(['party:A']);
+  assert.deepEqual(labels(filters.getAvailableOwnerOptions()), ['X', 'Y']);
+  assert.deepEqual(labels(filters.getAvailableCustomerOptions()), ['A', 'B', 'C']);
+  state.selectedCustomerKeys.add('party:C');
+  assert.deepEqual(labels(filters.getAvailableOwnerOptions()), ['X', 'Y', 'Z']);
+  assert.equal(state.selectedOwnerKeys.size, 3);
+});
+test('owners narrow customers and multi-selection combines their customers', () => {
+  const { filters, state } = setup();
+  state.selectedOwnerKeys = new Set(['name:Y']);
+  assert.deepEqual(labels(filters.getAvailableCustomerOptions()), ['A', 'B']);
+  assert.deepEqual(labels(filters.getAvailableOwnerOptions()), ['X', 'Y', 'Z']);
+  state.selectedOwnerKeys.add('name:Z');
+  assert.deepEqual(labels(filters.getAvailableCustomerOptions()), ['A', 'B', 'C']);
+});
+test('both filters use the opposite selection, independent of search and stage', () => {
+  const { filters, state } = setup();
+  state.selectedOwnerKeys = new Set(['name:Y']);
+  state.selectedCustomerKeys = new Set(['party:A']);
+  state.tableSearch = 'no match';
+  state.selectedStages.clear();
+  assert.deepEqual(labels(filters.getAvailableCustomerOptions()), ['A', 'B']);
+  assert.deepEqual(labels(filters.getAvailableOwnerOptions()), ['X', 'Y']);
+  state.selectedCustomerKeys.clear();
+  assert.deepEqual(labels(filters.getAvailableOwnerOptions()), []);
+  assert.deepEqual(labels(filters.getAvailableCustomerOptions()), ['A', 'B']);
+});